SE Extreme Wedge Air Cleaner not Playing Nice
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Road Master
Joined: Aug 2006
Posts: 829
Likes: 94
From: Fuquay-Varina, NC
SE Extreme Wedge Air Cleaner not Playing Nice
2024 Street Glide, Rinehart Slip On's, SE High Flow Air Filter (pop in K&N filter for the stock airbox), SE Pro Street Tuner running the 117 Stage 1 tune (standard, not wide band). Bike has been running fine with this combination.
I have always hated the look of the stock airbox so I installed the SE Extreme Wedge and reinstalled the Stage 1 tune to 'start over'. When I started the bike after the retune, the bike ran very rough and started to backfire. It eventually smoothed out a bit but was still not right. I rode for a short time in hopes the system just needed to readjust to compensate for the better airflow but it still idled rough.
I installed the tune again thinking I may have fat fingered something or the tune was corrupt. It started without backfiring but the idle remained rough and there was a strong smell of gas telling me it was running rich. I confirmed the installation of the Extreme Wedge AC and everything looked good.
At a loss, I removed the Extreme Wedge and reinstalled the stock airbox with the K&N filter. Bike started fine and ran great.
This points to the Extreme Wedge causing an issue. There are no holes in the air cleaner elements. All seal surfaces appeared to be seated properly.
Any advice on where to go with this (be nice!) next would be very much appreciated!
I have always hated the look of the stock airbox so I installed the SE Extreme Wedge and reinstalled the Stage 1 tune to 'start over'. When I started the bike after the retune, the bike ran very rough and started to backfire. It eventually smoothed out a bit but was still not right. I rode for a short time in hopes the system just needed to readjust to compensate for the better airflow but it still idled rough.
I installed the tune again thinking I may have fat fingered something or the tune was corrupt. It started without backfiring but the idle remained rough and there was a strong smell of gas telling me it was running rich. I confirmed the installation of the Extreme Wedge AC and everything looked good.
At a loss, I removed the Extreme Wedge and reinstalled the stock airbox with the K&N filter. Bike started fine and ran great.
This points to the Extreme Wedge causing an issue. There are no holes in the air cleaner elements. All seal surfaces appeared to be seated properly.
Any advice on where to go with this (be nice!) next would be very much appreciated!
Last edited by gabhart; May 11, 2026 at 08:17 AM. Reason: Typo
Just a thought, if he SE Air cleaner backing plate assembly did not sit flush (if it pulled or pushed on the throttle body) you may be inducing an intake leak or have a cracked intake manifold that gets exaggerated when the force is applied. It should literally fit exactly as what was removed without any pulling/pushing/tilting the throttle body.
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Thread Starter
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Road Master
Joined: Aug 2006
Posts: 829
Likes: 94
From: Fuquay-Varina, NC
Just a thought, if he SE Air cleaner backing plate assembly did not sit flush (if it pulled or pushed on the throttle body) you may be inducing an intake leak or have a cracked intake manifold that gets exaggerated when the force is applied. It should literally fit exactly as what was removed without any pulling/pushing/tilting the throttle body.
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